A087222 - cp's OEIS frontend

A087222 G.f. satisfies A(x) = 1 + xA(x)f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).

n	a(n)
0	1
1	1
2	4
3	10
4	26
5	69
6	184
7	488
8	1294
9	3436
10	9116
11	24190
12	64190
13	170334
14	451994
15	1199400
16	3182706
17	8445556
18	22410946
19	59469200
20	157806184
21	418751069
22	1111188772
23	2948626472
24	7824411358
25	20762688580
26	55095420880
27	146200015984

[1, 1, 4, 10, 26, 69, 184, 488, 1294, 3436, 9116, 24190, 64190, 170334, 451994, 1199400, 3182706, 8445556, 22410946, 59469200, 157806184, 418751069, 1111188772, 2948626472, 7824411358, 20762688580, 55095420880, 146200015984]

cp's OEIS Frontend

A087222 G.f. satisfies A(x) = 1 + xA(x)f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).

Table of values

List of values

cp's OEIS Frontend

A087222 G.f. satisfies A(x) = 1 + x*A(x)*f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).

Table of values

List of values

A087222 G.f. satisfies A(x) = 1 + xA(x)f(x)^3, where f(x) = Sum_{k>=0} x^((4^k-1)/3).